// comic.js — centered comic-panel overlay for crisis beats.
//
// Shows a wordless FLUX illustration with a UI-rendered caption above it
// (FLUX renders garbled text, so all words live in the crisp caption, not the
// picture). When there is no image (FLUX unavailable / failed / timed out / not
// yet ready), it does NOTHING and calls onDone() straight away — the fallback
// is simply no overlay, and the normal dialogue opens as usual.
import { G } from "./state.js";
import { sfx } from "./audio.js";

let dismiss = null; // active dismiss handler while a comic is showing

function escapeHtml(s) {
  return String(s).replace(/[&<>"']/g, (c) => ({
    "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;" }[c]));
}

export function isOpen() {
  const el = G.els.comic;
  return !!(el && !el.classList.contains("hidden"));
}

// imageB64: a base64 PNG string, or null/"" → skip the overlay entirely.
// caption: optional text drawn above the picture.
export function showComic(imageB64, caption, onDone) {
  if (!imageB64) { onDone && onDone(); return; }
  const el = G.els.comic;
  const cap = caption && caption.trim()
    ? `<div class="comic-caption">${escapeHtml(caption.trim())}</div>` : "";
  el.innerHTML = `
    <div class="comic-frame">
      ${cap}
      <img class="comic-img" alt="" src="data:image/png;base64,${imageB64}">
      <div class="comic-hint">CLICK or SPACE &#9654;</div>
    </div>`;
  el.classList.remove("hidden");
  requestAnimationFrame(() => el.classList.add("comic-in"));
  sfx.comic();

  let done = false;
  const timer = setTimeout(() => dismiss && dismiss(), 7000); // auto-advance
  dismiss = () => {
    if (done) return;
    done = true;
    clearTimeout(timer);
    el.classList.remove("comic-in");
    el.classList.add("hidden");
    el.innerHTML = "";
    el.removeEventListener("click", dismiss);
    dismiss = null;
    onDone && onDone();
  };
  el.addEventListener("click", dismiss);
}

// called by the SPACE/interact handler in main.js while a comic is showing
export function dismissComic() {
  if (dismiss) { dismiss(); return true; }
  return false;
}